Storage of oil-fuel in vessels.



H. E. YARROW.

STORAGE OF OIL FUEL IN VESSELS.

APPLICATION FILED 061230. 19:].

1 296,449. Patented Mar. 4, 1919.

Lses fiZVzP/z for bwramzd g/ @fi @QQM HAROLD E. YARROW, OF GLASGOW,SCOTLAND.

STORAGE OF OIL-FUEL IN VESSELS.

Specification of Letters Patent.

Patented Mar. 4, 1919.

i Application filed oetoberso, 1917. Serial 110199314.

the oil beyond that usually provided. If.

this additional storage space were provided at the ends of the vesselsthe amidships part would require to be very considerably strengthened inorder to stand the stresses set up when the ends were raised out of thewater in a heavy sea.

In addition to the tanks usually provided, other oil tanks may be placedamidships underneath the boilers throughout the stokehold compartments.This disposition of the weights reduces the stresses acting on thevessel in a seaway and thereby enables material to be economized and asaving in weight to be effecte i In order to insure that the temperatureof the oil shall not be unduly raised by the heat radiated from thebrick pans at the bottom of the furnaces, according to the invention,the air supply for some or all of the oil burners is led from the backof the boilers along a duct, the upper side of which is, preferably,formed by the brick pan and the lower side by the top of the oil tanks.The arrangement has the advantage that the more the boiler is forced,the greater will be the quantity of air drawn past the oil tanks, sothat the cooling effect will increase with the heat radiated from thebrick F In the accompanying drawing, Figure 1 is a cross section througha destroyer taken in front of one of the boilers. Fig. 2 is an elevationpartly in section through one of the boilers.

A is a steam drum, B water drums, O superheater tubes, D is the front ofan air casing; E E are oil fuel sprayers and F F* non-return flapsadmitting air to the Copies of this patent may be obtained for casingsurrounding each sprayer; G are oil fuel tanks extending underneath theboilers; H is a duct between the bottom of the brick pan K and the oiltanks G, and through this duct air is led, in the example shown, to thefourlowest oil fuel sprayers. H is an extension of the air duct whichmay or may not be provided at the back of the boiler and leads to thestokehold. The duct H leads into an air space formed between the casingD and an outer casing I, in which a door J is provided to give access tothe oil sprayer E L is a lever with a handle at one end and a catch atthe other for locking the air flap F. L is a lever provided with a screwthread by which the air flap F is locked when the lever is screwedinward.

Air may be supplied from the duct to any number of sprayers, more orless than those shown; the air for the remaining sprayers is takendirectly from the stokehold in the usual manner.

Although to save weight it is preferable that the upper and lower partsof the air duct should be formed by the brick pan and oil tanksrespectively, thin plating may be.

used for thepurpose.

Having thus described the nature of the said invention and the bestmeans I know of carrying the same into practical effect, I claim 1. Inships in which oil tanks are placed amidships below the boilers, meansfor preventing the tanks from attainin an undue temperature, comprisinga duct etween the brick pan and the top of the tanks, through which ductair passes ing some or all of the oil fuel sprayers.

2. A duct according to the preceding claim, the upper and lower parts ofwhich are formed respectively by the bottom of the brick pan and the topof the oil tanks.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HAROLD E. YARROW.

Witnesses J AMES Rrronm, Srnvns'rnn LITTON.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

